Answer:
Cells together make tissues, tissues together make organs, organs together make organ system.
Explanation:
Cellular organisation:
Cells → Tissues → organs → organ systems → complete organism
Cells:
- cell is the basic functional unit of life.
- Organization of system starts from the cellular structure.
Tissues:
- group of cells together forms tissues.
- These cells can be either similar or dissimilar cells that forms a group to perform a similar function.
Organs:
- Group of tissues performs a similar function forms an organ.
- Organs have different types of tissues and they are made by different types of cells.
Organ system:
- Group of organs performing either same or different function to form an organism is termed as organ system.
